Blade-sharpener



H. n. KEMPTON. BLADE SHARPENER.

APPLICATION FILED MAY 16, 1919.

1 $332,04 Patented Feb. 24 1920.

.ing like,

HARRISON nKEirirTorI, or PROVIDENCE, nnonn ISLAND.

" BLADEesHA RlPENER.

Specification of Letters Patent. Patented Feb, 24, 1920.

Application filed lllay 16, 1919. Serial No. 297,516.

To all whom it may concern Be it known that I, HARRISON DQKEMP- TON, a citizen of the United States, and resident of Providence, in the. county of Providence and State of Rhode Island, have invented certain new and useful Improvements in BladeSharpeners, of which the following is a specification.

This invention relates to a blade-sharpendevice such as for razor blades and the and has for its object to provide simple, practical and inexpensive means whereby such a blade may be a holder .above an'abrading member, the holder being provided with a handle by which the working pressure of the blade upon the abrading surface may be nicely controlled.

lVith these and other objects in View, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in. the appended claims. 1- V In the accompanying drawings:

Figure 1- is a perspectiveview showing myimproved blade-sharpening device.

Fig. 2- is a central sectional elevation showing the blade mounted in its holder and approaching one end of its stroke.

Fig. 3 shows the blade in reversed position from that illustrated in Fig. 2.

Fig. 4 is a plan view of the blade holder.

Fig. 5- is a pers ective view of a mod ifi cation showing a di erent structure by which the holder may be guided over the abrading surface.

Referring to the drawings, 10 designates the abrading member which may be a block of any suitable material provided on its surface 11 with a suitable abrasive whereby the blade 'tobe sharpened may be either honed or stropped as desired. This blockis shown as being provided with longitudinally disposed grooves 12 on either edge for guiding the wheels of the'holder presently described, and the ends of this block are recessed as at 13 for the purpose of assisting in reversing the blade side for side upon the reverse movements of the holder.

The holder itself may be constructed in any suitable way and of any suitable material but I have shown the same as provided with an axle 14 on the ends of which are mounted wheels 15 adapted to roll in the grooves 12 in the abrasive block. On this axle I have mounted a yoke-shaped presser readily mounted in i which is preferably formed of spring wire looped about and pivotally hung upon the and 18 being formed of spring wire are naturally more or less yielding or resilient, whereby just the desired amount of pressure may be yieldably applied to the blade in handle over the abrasive surface. I

In order to provide one way of releasably mounting the blade 20 on the holder I have provided a pair of jaws 21 on each of which is formed a handle 22, and I have provided a spring clamp 23 which extends around the axle l4 and its edges are caused to engage the jaw plates 21 and cause them to bite and grip the blade connecting it in a simple and effective way to swing about the axle of the holder, but I do not wish to be restricted to this particular means of connecting this blade to the holder, as any suitable means may be employed for this purpose; neither do I wish to be restricted to the employment ofwheels-on the holder to run in grooves in the block, as in some cases I may form eyes 26 in the opposite ends of the axle 27, to slide on longitudinally-disposed rods 28, as illustrated in Fig. '5, or any other suitable means for guiding the holder over the abrasive face of the block, may be employed.

In operating my improved blade sharpener I simply press together the two handles and so open up the jaws to receive the blade 20. When the blade is in the position relative to the handle shown in Fig. 1, the

holder-is moved in the direction of the arrow to draw or drag the blade so that its edgewill contact with the abrading surface of the block, a pressure on the blade being yieldably exerted through the handle 19 and the yielding yoke member 17 The holder is now moved to the end of the block, the blade upon reaching the recessed portion 13 naturally drops by gravity rotating on its axle 14 and hangs straight down in the recess, as illustrated by dotted lines in Fig. 2. The movement of the holder is now reversed which causes the blade to contact with the edge 24 on the block thus causing the blade to be further rotated on its axle and present its opposite edge to the abrading surface during the return stroke of the holder at which time a yielding pressure is exerted on drawing the same back and forth the the blade by the handle through the yoke formed 0 strips of leather, rubber, or other suitable material which serve to raise the edge of the blade just clear of the edge of the blockand so prevent direct contact one with the other.

The device is extremely simple and effec- 'tive' in its operation and practical in its construction and by its use a blade may be quickly and accurately honed or stropped as desired, one side of the block being provided with a honing surface while the opposite side is provided with a stropper surface if desired.

The foregoing description is directed solely toward the construction illustrated, but I desire it to be understood that I reserve the privilege of resortin to all the mechanical changes to which tie device is susceptible, the invention being defined and limited only by the terms of the appended claims. 7 1

I claim:

1. A blade sharpener comprising an abrad- 7 ing plate, a holder in which the blade is releasably mounted above said plate, means in said plate for engaging the blade on the return stroke and causin it to turn over and present its opposite e ge to'said abrasive plate, a handle on said holder, and means whereby said handle may be operated to control theworking pressure of the blade upon the abrading plate.

2. A blade-sharpener comprising an abrading plate, a holder in which the blade is removably mounted above said member, means in the edge of said member for engaging the blade and causing it to turn over upon a reverse stroke of said holder to brmg lts reverse surface 1n operatmg engagement with the abrading plate, ahandle onfsaid.

holder, and meanswhereby said handle may be operated to control the working pressure 7 of the blade'upon the abrading plate.

3. A blade-sharpener comprising an abrading member, a holder in which the blade is releasably mounted above said member, means in said plate for engaging the blade on each return stroke causing it to turn over a and present its opposite edge to the abrasive turn stroke and causing it to turn over and present its opposite edge to said abrasive plate, a handle on said holder, means whereby said handle may be caused to control the working pressure of the blade upon the abrading plate, and cushioningineans on said plate for preventing injury to the blade edge when contacting therewith.- v

In testimonywhereof afiix my signature.

HARRISON D. KEMPTON. 

